Ed ward tangye



(No Model.)

E. TANGYE.

METALLIC FUSE. No. 364,318. Patented June '7,- 1887.

wit memes iqn ucmro t UNITED STATES PATENT OFFICE.

: nnvvnnnranovnyor REDRUTH, COUNTY or CORNWALL, ENGLAND.

ME ALLIC FUSE;

spec men-iron forming an; of'Letters Patent No 364,318, dated June '1, 1887.

Application filed January 13,1887. Serial No. 224338: (No model.) Patented in England March 24, 1885, No.3,774, and in France January ll, 1886, No. 173,458.

' To all whom it may cortcern:

Be it known that I, EDWARD TANGYE, a

citizen of Great Britain, residing at Redruth; in the county of Cornwall, England, have in 5 vented certain new and useful Improvements in Metallic Fuses and in the Method of Making the Same, (for whichI have obtained patents in Great Britain, No.'3,774, hearing date March 24, 1885, and in France, No. 173,458, hearing date January 11, -188t3,) of which the following is a specification,

My invention relates to improvements in the V manufacture of safety damp proof metallic fuse; andthe obj'ectsoflmyimprovementsare' fi'rst, to reduce the thickness of themeta'l coating," audconsequ'ently the weight of the fuse to a minimum, and, secondly, to provide an article which shall be absolutely free from im- 'perfections and perfectly damp-proof. 2o tain these objects by't-he use of mechanism illustrated in the accompanying drawings, in which-- 7 Figure 1 is an end view, and view,of the machine.

Similarletters refer to similar parts throughout. I

.A A represent rolls, which rest upon each other at the ends audare slightly apart where the grooves are cut and the guides fitted.

They revolve in bearin'gs B B, the latter be.-

ing adjustable by the nuts C. On the axles of these rolls gearing-wheels D D are fixed.

Eis abed or base-plate upon which the screws Fig. 2 afront F and'G are fixed, and by means of which the I bearings are adjusted by alteringthe position of the nuts 0 C. Upon'the screws F the guideplate- H is secured, as shown, its exact position being-regulated bythe nuts I I. In this guide plate dies J J are secured, of such a shape as to project to the center of the rolls, (terminat- I ing almost in a knife-edge.) They areheld in i position in the guide-plate by the screws K,

and may be adjusted or removed. ,On the end ofthe base-plate a bracket, L, is secured, in

which the axle M revolves. On one end of this axle the toothed wheel whichgears into and drives the wheel D is fixed, and on the other end the driving-pulley N is secured.

The machine is driven 5o convenient motor.

- In the rolls A Aa graduated series of grooves,

by a belt from any Iat aa a a a a is cut as shown alternatin 1 7 7 b semi-elliptical and semicircular. The size of the hole formed by the grooves a when the rolls are placed together depends upon the size of the tube to be operated'npon, and is arranged so that its longer diameter shall not be less than the diameter of the tube. "The diameter of the hole formed by the grooves a and so on throughout the series.

. The guide H is fitted with a die or dies, J, 1 as shown, having holes to correspond in size 6 andshape with the holes formed by the grooves in the rolls, the largest, 1, beingcircular t-o're-' ceive the tube as it comes to the machine, the second, 1 being oval to receive thetube as it comes from the largest hole formed by the grooves a of the rolls which is oval, and the third, I,being again circular to receive the tube as it comes from the second hole formed by the rolls which is circular, and so on oval and circular and gradually reducing in size through 7 out the series. In case of oval guide-holes the longer diameter is placed vertically.

The rolls having been adjusted and being securely held in position,the machine is started by means of a belt on the pulley N and the rolls revolve. The tube, which is previously filled with gunpowder or other suitable materialdependent upon the use for whichit is intended, and having its ends closed, is then passed into the largest circular guide-hole, is '85 caught by the rolls, and pulled through, being drawn into, an oval shape, reducediu size, andincreased in length. It, is then returned to the I ncxtguide-hole, which is oval, passed in, and, being gripped by the rolls, is pulled through and drawn into a circular shape. again of I rate and certainty of its actiou'assured. By 1oo this method I produce a lighterand more perfect tubethan anything at present in use,

', which may be coveredyvarnished, and count-- I .an aware that 'nietal-coated fuses' have ered, as desired. 7 l

I would not have it'understood that I con finemy'self to the use of a single setrot' rolls; .as here described, as I may use two or more sets. i

been in use prior to'thisinvention, and therefore do not claim the use of metal, broadly, as, a case for the powder; but I What I do claim as my invention and desire to secure by Letters Patent, is-

1. The"method of making metallic-coated fuse, which consists in first loading a short tube with gunpowder or other suitable material and closing the ends of it, and then pass- .ing the said loaded tube-between two rolls having a series of meeting grooves, forming a gradually-reducing series of holes alternately circular and oval, which elongate and. reduce the thickness of the saidloaded' tube, substant-iall y as set forth. t Y L V 2. The method of making metallic-coated fuse, which consists in first loading a short tube with gunpowder or other suitable mate rial and closing theends of it, then passing the said loaded tube between two rolls having a series of meeting rooves, forming a gradually-reducing series f alternately circular and oval holes, which "elongate and reduce the thickness of the said loaded tube, and finally passing the said tube through grooves which change its sectional formwithout elongating I it, and thereby granulate its contents, substan tially as set forth. g

3. As an article of manufacture, a rolled fuse consisting of a core of inflammable material having a very thin inclosing metallic case formed about it, substantially as set forth. 

